Inkcubeko yezolimo yokufuya yale mihla ihlala inyamezele kwaye ikhulele kuneenketho zabo zangaphambili, okuthetha ukuba bandisa ubomi bezigidi zabantu, yitsho oososayensi baseCalifornia eSan Diego.
Ngokutsho kwesifundo esihle sokuphuhliswa kwezityalo zanamhlanje, abantu abangaphezu kwe-100 yezigidi zabo basindisiwe ukusukela kwiminyaka engama-60 eyadlulayo eyaziswa iintlobo ezahlukeneyo zangoku. Kwaye uqhubeke nokuthathela ingqalelo ukuguquguquka kwexesha elithile, ukusebenza kwempumelelo eluhlaza okwesixhobo ukusuka kwizigidi kwezintathu ukuya kwezintandathu ubomi bahlangulwa minyaka le, kubandakanya abo baxhathise izifo kunye nezinambuzane.
Nangona kunjalo, izazinzulu zigxininise oko kule ndawo kusekho amathuba okuphucula.
Ngokukodwa, imimandla enjengeAfrika esemazantsi eSahara iya kuxhamla kwintshayelelo ebanzi yezixeko zezolimo zanamhlanje kwaye iya kufumana izibonelelo ezifanayo, umzekelo, i-India.
Unjingalwazi uGordon McCord, eCalifornia University Economist eSan Diego kwaye ilungu leqela lesayensi laza lathi: "Ukuba kuye kwenzeka emazantsi e-Afrika, amazinga ethu, amazinga omlo, amazinga okulwa kwentsana iya kuphakama ibe ngama-31 epesenti. "
Abaphandi bafika kwisigqibo, begutyungelwe lixesha ukususela ngo-1961, xa iintlobo zangoku zaza zaziswa kuphela kumazwe asaphuhlayo ehlabathi, ka-2000. Bathelekisa izinga lokufa kwabantu abangaphezu kwe-600,000 kumazwe angama-37 asaphuhlayo, ukongeza kwiPosi yoLuntu phakathi kwabafazi, ngedatha yendawo yezityalo zezolimo.
Ngenxa yoko, njengabanquli kwezolimo bale mihla, ukusebenzela ukulwa ukufa kwentsana ukwanda ukusuka kwi-2.4 ukuya kwi-5.3 pesenti. Ukongeza, kuye kwakho ukwehla okungakumbi ekufeni kwabantu phakathi kweentsana ezingamadoda kunye neentsapho ezinengeniso ephantsi.
Ngapha koko, ngokutsho kweziyathango, icandelo elibalulekileyo lokuncitshiswa kwangaphambi kokusweleka kwabantu kumazwe asakhasayo kumazwe asaphuhlayo anokunxulunyaniswa neziqhamo ezininzi kwizityalo zengqolowa, ezisisiseko sobomi isesalekele emva kwamazwe akhuselekileyo kunye namazwe achumileyo.
Unjingalwazi uMccord wathi: "Awunakuphulukana nefuthe lempilo ngokunyuka okukhulu kwemveliso yezolimo. Ukusuka kwimbono yezopolitiko, inkxaso yelizwe kwezixhobo ezikhokelela kwinguqu eluhlaza, kunye notyalo-mali kwiNkqubo yokusasazwa kolwazi kunye ne-R & D (ibalulekile.
Ingqolowa, i-Corn kunye nerayisi yeyona ndlela iphambili inkcubeko, ethembisa intsebenziswano yamanye amazwe. Ngokuphathelene noku, i-United States ikhokelela, ukwazisa iintlobo zangoku kuphuhliso elincinci kwezoqoqosho kwilizwe.
Izazinzulu zaphawula ukuba umsebenzi wawo wesayensi uya kuba luncedo ekwenzeni imigaqo-nkqubo malunga nokwehla ngaphezulu kokubhubha komntwana kumazwe asaphuhlayo. Kodwa oku kugcinwa kwezinto, kuba abaphandi babengenakuthathela ingqalelo ukusetyenziswa ngokubanzi kwezichumisi, ukunkcenkceshela okanye iindlela zokulawula izinambuzane.
Ababhali babhala: Endaweni yoko, idatha yethu ithetha ngokubaluleka kokuxhasa imveliso yezolimo njengendlela yokuphucula ubomi kumazwe asaphuhlayo, kubandakanya ubomi bamahlwempu ezisemaphandleni. "
(Umthombo: www.Express.co.uk. Umbhali: Intlanzi yeTom).